Verb. refers to the act of having anal sex, usually involuntarily, or perhaps being taken advantage of. a.k.a "Butt porked"

You just got donkey borked.

"My cowboy friend is gay coz he likes to be borked, he lives on Borkback Mountain"

A man was hunting deer to make sausage. He spotted a buck and cocked his gun. Misfire! the buck charged him... The hunter woke up and discovered he was bent over a log.
The buck said "Here is that deer sausage u wanted", then he borked him.